Specific strategies to achieve the physical activity goal. A physical activity goal of 700 kilocalories per week (or 2.5 hours of moderate activity) is set in a step-wise fashion to be reached in 5-weeks. Another goal is to reach 10,000 steps per week recorded on the accelerometer. Participants will be asked to maintain daily physical activity records in their diaries based on information from the accelerometer. Sites at which physical activity can be safely and effectively undertaken will be identified for each participant, based on their residence.